Pivotal sash and balance assembly



y 1966 w. o. JOHNSON 3,248,821

PIVOTAL SASH AND BALANCE ASSEMBLY Filed Aug. 5, 1964 3 Sheets-Sheet 1INVENTOR. FIG.| WALDO O. JOHNSON op/MOM ATTYS.

United States Patent ()fifice 3,248,821 Patented May 3, 1966 3,248,821PIVOTAL SASH AND BALANCE ASSEMBLY Waldo 0. Johnson, Wooster, Ohio,assignor to Weather- Seal, lnc., Barberton, Ohio, a corporation of OhioFiled Aug. 5, 1964, Ser. No. 387,648 9 Claims. (Cl. 49-175) The presentinvention relates to pivotally positoned double hung sashes and to thecombination of such sashes and the balance assemblies provided therefor.

Heretofore in many different types of double hung windows, some type abalance means has been provided to facilitate easy vertical movementthereof. Also, it has been proposed heretofore to provide pivotallypositioned double hung sash members that have a releasable engagementalong one vertical margin of the sash with the jamb liner means providedtherefor whereby the sashes can be swung inwardly about suitablevertical hinge means provided therefor to facilitate cleaning of thesashes, or for other access thereto, as desired. One of such priorconstructions is shown in Harold A. Etling US. Patent No. 2,584,684.

The general object of the present invention is to provide a novel andimproved double hung sash characterized in the improved slidablepositioning of these sashes in their jamb liner means, and to the noveland improved relationship between a lock member provided on one verticalmargin of the sash and its associated jamb liner means.

Another object of the invention is to provide a novel and improvedrelationship between a balance means used to position a sash in a jambliner and a sash balance channel, and to provide a novel association ofthe balance means with the hinge means provided for a pivotallypositioned sash in a window assembly.

Another object of the invention is to provide novel and improved balancemeans in a pivotal window sash to support such sash on both verticalmargins thereof.

Another object of the invention is to provide novel and improved sealand connecting means for attaching an edge of a window sash pivotally tosuitable sash positionmg means.

Yet another object of the invention is to provide improved means forretaining a locking bar on a window sash in an extended operativeposition and to provide an improved means for retracting the locking barto an inoperative position when it is desired to permit the window tohave pivotal movement above its opposite edge.

A further object of the invention is to provide a novel and improvedpivotal window that has substantially conventional balance meanspositioned therein and wherein the pivotal window has a good sealedengagement with its positioning means to provide an improved, attractivewindow assembly.

The foregoing and other objects and advantages of the invention will bemade more apparent as the specification proceeds.

Attention now is particularly directed to the accompanying drawings,where:

FIG. 1 is an elevation of a novel and improved window assembly embodyingthe principles of the invention with portions of the window being brokenaway and with portions of the window assembly being shown in verticalsection;

FIG. 2 is a fragmentary enlarged elevation, partially broken away andshown in vertical section, of the slide bar and associated locking meansprovided at the free marginal edge of the pivotally positioned windowsash;

FIG. 3 is an enlarged vertical section taken on line 3--3 of FIG. 1 withboth sashes moved to their lowered positions and with the pivotal actionof the one window sash being indicated;

FIG. 4 is a vertical section through the balance means and bingeassembly used for attaching one vertical margin of a window sash to theassociated window jamb as shown in FIG. 1;

FIG. 5 is an elevation of the hinge and balance positioning means shownin FIG. 4;

FIG. 6 is a fragmentary enlarged vertical section through the jamb linerassembly of the unit shown in FIG. 1; and

FIG. 7 is a fragmentary horizontal section taken on line 7-7 of FIG. 2.

In referring to corresponding members shown in the drawings and referredto in the specification, corresponding numerals are used to facilitatecomparison therebetween.

The present invention, generally speaking, as to one importantembodiment thereof, relates to the combination in a slidable and pivotalwindow sash assembly of a window cash, a vertically positioned jambliner, a sash hinge balance channel slidably positioned in the jambliner, which channel has a flat base and is of generally U-shape inhorizontal section and has an ofl set arcuate hinge section formedthereon at its base, the channel having a pair of vertically spacedportions of its base and of the associated parts of the hinge sectionremoved therefrom, pintle means engaging the hinge section of the sashhinge channel and of the removed parts of the channel base to securesuch parts pivotally to the channel and to permit such parts to be movedto lie in the plane of the base thereof, and means securing one lateralmargin of the window sash to the removed channel parts for pivotalattachment to the channel, the window sash being positionable with partof the one lateral margin thereof being abutted against the base of thechannel to provide a substantially sealed vetrical margin on the windowsash.

Attention now is particularly directed to the details of the structureshown in the accompanying drawings, and a novel double hung window sashassembly of the invention is indicated as a whole by the numeral 1. Thissash assembly 1 is positioned in a suitable building 2 and an upper sash3 and a lower sash 4 are vertically slidably positioned and alsopivotally positioned in the sash assembly 1.

FIGS. 1 and 3 of the drawings best show that the building 2 may have awindow frame positioned therein including a vertically extending jamb orframe member 5 which includes an inner or trim stop 6 and an outer blindstop 7 therein. A pair of vertically positioned jamb liners 8 and 9 areshown positioned on the frame member 5 and these jamb liners usually aremade from a suitable metal, such as aluminum that usually is formed asan extrusion to a desired cross sectional contour to facilitatepositioning the sashes 3 and 4 therein for the desired pivotal andsliding action. The individual jamb liners 8 and 9 preferably arepositioned in adjustable spaced relationship with the associatedsurfaces of the frame member 5 and thus usually a suitable foam plastic,or resilient member 10 is positioned under these jamb liners 8 and 9. Ifdesired, a plurality of the foam strips may be used to space the jambliners from the associated frame member. Usually the frame member orjamb receives some conventional type of an anchoring means, such as theunit 11 shown in FIG. 6, that engages a cap screw 12 that extendsthrough and engages one of the jamb liners 8 or 9. The anchor unit 11 issuitably positioned in the frame member 5 so that by drawing the screw12 into engagement therewith, the spaced relationship between the jambliner 8 or 9 and the frame member 5 can be varied to, in turn, controlor vary the lateral opening provided in the building 2 for the sashassembly 1. J

, The jamb liners 8 and 9 are restrained against undesired laterallyinward movement in the window assembly by members, such as angles orstops 13 and 14 that are secured, respectively, to the inner stop 6 andouter stop 7 of the window frame for limiting lateral inward movement ofthe jamb liners 8 and 9, respectively.

FIG. 3 of the drawings best shows that the jamb liners 8 and 9 are ofsubstantially the same cross sectional contour, and with each one ofthese jamb liners having a recessed center section and 16, respectively,provided therein, which center sections have overhanging portions of thejamb liner associated with the opening thereof to aid in forming anenclosure for receiving a portion of the sash positioning means, ashereinafter described in more detail.

The actual sash positioning means in the sash assembly 1 includes alower sash hinge balance channel 17 and an upper hinge balance channel18, respectively, that are slidably engaged with the jamb liners 8 and9, respectively, for sliding vertical movement therein. Such channels 17and 18 are actually engaged with the associated recess center sections15 and 16 of the jamb liners by members, such as plastic end sections orrunners 19 and 20.

The drawings clearly show that the hinge balance channels 17 and 18 areof generally U-shape in horizontal section and that these channels havesubstantially flat bases provided thereon and with each channel havingan offset arcuate hinge section 21 being formed, usually, as a unitaryportion of the extruded channel. The channels 17 and 18 are positionedto extend into the recessed center sections 15 and 16 of the jamb liners8 and 9 with the open side or mouth of the channels extending into therecessed center sections of the jamb liners, and the plastic ends orrunners 19 and 20 normally are attached to each end of the channels 17and 18 by screws 17a. The runners or ends 19 and 20 are of a hollowbox-shape in section with a pair of offset vertically extending edgeflanges 22 and 23 being provided on each one of the runners 19 and 20.In addition, these flanges 22 and 23 each have a plurality oflongitudinally extending lugs or bars 24, 25 and 26, FIG. 3, formedthereon to aid in forming guides or spacing members on the runners 19and 20 and usually being positioned immediately adjacent the innersurfaces or faces of the recessed center sections 15 and 16 of the jambliners. The runners 19 and 20 are snugly received in the channels 17 and18 and usually frictionally engage therewith by means of the offsetflanges 22 and 23. The runners 19 and 20 and hinge balance channels moveas a unit with the upper sash or lower sash of the window assembly toaid in positioning these sashes for sliding vertical movement in theassociated jam'b liners 8 and 9.

As a novel and important feature of the present invention, portions ofthe hinge balance channels 17 and 18 are movable in relation thereto.FIGS. 4 and 5 of the drawings thus show that vertically spaced sectionsor portions 27 and 28 of the lower hinge balance channel 17 are suitablymovable therefrom. These movable portions 27 and 28 include theassociated parts of the offset hinge socket 21 formed with the baseportion of the channels 17 and 18. Naturally these portions 27 and 28movable from the channels 17 can be cut therefrom in any desired mannerand usually may just be sawed therefrom during the process ofmanufacture of the sash assembly 1. By providing these movable portions27 and 28, it is possible to provide a substantially sealed, andconcealed hinge ,means for securing the lower sash 4 pivotally to thelower hinge balance channel 17. Thus, after the portions 27 and 28 arecut or otherwise made movable from the channel 17, they are re-engagedtherewith preferably after a number of holes 29 are drilled therein. Themovable portions 27 and 28 thus are pivotally secured to the associatedchannel 17 by a suitable pintle, or pintles 30 that are posi- ,gagedtherewith. Thus-by securing the lower sash 4 to the movable .portions 27and 28 by suitable screws 31 or the like, the lower sash 4 is adapted tobe pivotally secured to this lower hinge balance channel 17 and theupper sash is similarly positioned. It will be noted that FIG. 3 of thedrawings best shows that the lower sash 4 may have a rabbeted verticallyextending side sash rail provided thereon and usually the movableportions 27 and 28 are secured to the laterally inner surface of thissash rail whereby that portion of the sash will be snugly and tightlyassociated with the lower hinge balance channel 17 and the associated orstepped portion of the sash may slidingly engage and bear againstassociated edge portions of the j arnb liner 8.

As another feature of the invention, the lower hinge balance channel 17is shown in FIGS. 4 and 5 as having substantially conventional balancemeans positioned therein and adapted to aid in positioning the sash 4for easily controlled vertical sliding action in the jamb liner 8. Thus,a conventional balance assembly 32 is positioned within the hingebalance channel 17, and has one end of the balance assembly 32 attachedto a coil spring 33 by a pin 34. The opposite end of the coil spring 33is secured in the channel 17 as by a pin 35 whereby the balance assemblyis concealed within this channel 17. The balance assembly 32 includes ablock and tackle means 36 that is fixedly positioned within the channel17 and has a plurality of convolutions of a cable 37 extending to amovably positioned pulley 38 that is formed as an operative unit withthe pin 34 or an end of the coil spring 33. One end of the cable 37extends from the block and tackle means 36 and has an end member oranchor 39 secured thereto and suitably engaged with the jamb liner 8whereby on vertical movement of the lower sash 4, the cable 37 will bepulled to extend further from the channel 17 and create tension in thecoil spring 33 for retraction of the sash when moved vertically in itspositioning jamb liner 8 and other associated means. While the meanspositioning one lateral margin of the lower sash 4 have been shown anddescribed in detail, it will be realized that similar means are used forengaging and positioning one vertical margin of the upper sash 3 forvertical sliding movement and for pivotal action in a horizontal plane.

In order to associate the other vertical margin of the sashes 3 and 4with slide control means and positioning means in the building 2, eachof the sashes 3 and 4 has a vertically extending lock bar 40 or 41,respectively; movably associated therewith in a side sash rail thereof.Each of these look bars 4! and 41 has a solt 42 provided therein, asshown in FIG. 2, a portion of such slot 42 extending vertically and withan offset portion in clined laterally outwardly and indicated at 42aalso provided therein. Sui-table pins, or similar members 43 extendthrough the slots 42 and engage the associated sash to control theposition of the lock bars 40 and 41 and to permit controlled lateralextension and retraction movement of the lock bars with relation to thesash 3 in a manner similar to the constructions shown in US. Patent No.2,584,684.

As a feature of the present invention, a vertically extending jamb liner44 and 45 is provided for engaging each of the lock bars 40 and 41,respectively, for controlled sliding engagement therebetween. These jambliners 44 and 45 preferably are made from a suitable moldable orextrudable material, usually plastic, such as polyvinyl chloride andthese jamb liners have opposed sealing lips 46 and 47 formed thereon toengage, resiliently, opposite surfaces of the lock bars for sliding,substantially sealed, engagement therewith. These jamb liners 44 and 45are positioned in suitable recesses 48 and 49 provided in a jamb 50 thatis suitably attached to the building.

As a feature of the present invention, some known type of a balancemeans, which may be similar to the balance assembly 32, is positionedwithin each of the jamb liners 44 and 45 and includes a coil spring 51that extends downwardly therefrom. Such coil spring 51 is engaged with abalance end member 52 that is slidably positioned in the jamb liner 45,as shown in FIG. 1, and has means associated therewith for locking suchbalance end member 52 in a given vertical position in the windowassembly. The balance end member 52 has a projection or bracket 53suitably secured thereto and extending laterally inwardly therefrom forengaging the lower righthand corner of the lower sash 4, as shown in thedrawings, to retain the sash balance means and the sash in engagementwhen the sash is slidably positioned in the sash assembly. A slide catch54 is pivotally carried by the balance end member '52 and the laterallyinner surface thereof is adapted to be engaged by the laterally outermargin of the associated lock bar 41 when the sash is positoned forsliding vertical movement and this retains the slide catch ininoperative position. A spring 55 is shown compressed between the slidecatch 54 and an associated portion of the balance end member to urge oneend of the slide catch 54 laterally outwardly through a suitable slot 56formed in the balance end member.

The jamb liners 44 and 45 are provided with a plurality of verticallyspaced slots 57 for receiving or engaging the latch end of the slidecatch 54 therin when the slide catch is free for lateral outwardmovement when the lock bar associated therewith is retracted. Hence,when it is desired to free one vertical margin of the lower sash 4 forpivotal movement, the upper end of the lock bar involved is forceddownwardly as such upper end projects upwardly from the lower sash 4,for example, and an end of the lock bar 40 may project downwardly fromthe upper sash, as desired. By moving the lock bar 41 downwardly, thelock bar is pulled laterally inwardly of the sash margin and the lockbar is retracted from engagement with the jamb liner and associatedsl-ide catch. Next, upon slight cont-rolled vertical movement of thewindow sash, the slide catch 54 will engage with one of the slots 57provided in the jamb liner. Then it is only necessary to raise the sash4 upwardly a short distance to free the bracket 53 from engagement withthe sash, and the sash is free for pivotal movement about the hingemeans described hereinbefore. The upper sash is freed for pivotalmovement in a similar manner.

For re-engagement of the sash with the jamb liner 44 or 45 to positionit for controlled vertical movement, it is only necessary to swing thesash back into the vertical plane occupied by its jamb line-r and thento move the associated lock bar 40 or 41 vertically to cause the lockbar to extend to engage the slide catch 54 and move it to inoperativeposition. Next by action of the associated balance means, the bracket 53will automatically be brought into engagement with the lower margin ofthe sash and it is positioned for controlled sliding movement in thewindow assembly.

Preferably each of the jamb liners 44 and 45 is spaced slightly from thebottom of the recess 48 and 49, respectively, in which it is positioned,by some strip of resilient compressible member, or means 58 or 59 andthis facilitates providing space for the end of the slide catch 54 whenit is locked into engagement with the associated jamb liner. Usually thebalance end members 52 are of substantially U-shape in vertical sectionand are provided with sufficient space between the branches or legs ofthe Ushaped body to position the slide catch and associated meanstherein.

It will be realized that the plastic runners 19 and and the jamb liners44 and 45 can be made from any desired material, but preferably the useof some low friction type of plastic material is desired so thatassociated metal means will form low friction engagement therewith forgood sliding action in the window sash assembly.

By the means used for positioning opposite vertical margins of the upperand lower sashes 3 and 4, respectively, a substantially sealed, goodprime window construction has been provided by the invention. At thesame time, the window sashes are readily available on both surfacesthereof for cleaning or repair act-ions thereon, as desired. The unitwhen formed in quantity production can be made and assembled relativelyinexpensively to provide an improved but durable window unit. Thus it isbelieved that the objects of the invention have been achieved.

While one complete embodiment of the invention has been disclosedherein, it will be appreciated that modification of this particularembodiment of the invention may be resorted to without departing fromthe scope of the invention as defined in the appended claims.

What is claimed is:

1. -In a slidable and pivotal window sash assembly, the combination of,

a window sash,

a vertically positioned metal jamb liner,

a sash hinge balance channel slidably received in said jamb liner, whichchannel is of generally U-shape in horizontal section and has an offsetarcuate hinge section formed theron on its base, said channel having apair of vertically spaced portions of its base and of the associatedparts of said hinge section removed therefrom,

pintle means engaging said hinge section of said sash hinge balancechannel and of said removed parts of said channel base to secure suchparts pivotally to said sash hinge balance channel,

means securing one lateral margin of said window sash to said removedparts for pivotal attachment to sash hinge balance channel,

balance means carried by said sash hinge balance channel and having oneend extending therefrom and secured to said jamb liner to support saidwindow sash therein, and

retractible means on the other lateral margin of said window sash toposition it for controlled sliding action.

2. In a slidable and pivotal window sash assembly,

the combination of,

a Window sash,

a vertically positioned metal jamb liner,

a sash hinge balance channel slidably received in said jamb liner, whichchannel is of generally U-shape in horizontal section and has an offsetarcuate hinge section formed thereon on its base, said channel having apair of vertically spaced portions of its base and of the associateparts of said hinge section removed therefrom,

pintle means engaging said hinge section of said sash hinge balancechannel and of said removed parts of said channel base to secure suc-hparts pivotally to said sash hinge balance channel,

means securing one lateral margin of said window sash to said removedparts for pivotal attachment to said sash hinge balance channel, and

balance means carried by said sash hinge balance channel and having oneend extending therefrom and secured to said jamb liner to support saidwindow sash therein.

3. In a slidable and pivotal window sash assembly,

the combination of,

a window sash,

a vertically positioned jamb liner,

a sash hinge balance channel slidably positioned in said jamb liner,which channel has a flat base and is of generally U-shape in horizontalsection and has an offset arcuate hinge section formed thereon at itsbase, said channel having a pair of vertically spaced portions of itsbase and of the associate parts of said hinge section removed therefrom,

pintle means engaging said hinge section of said 'sash hinge balancechannel and of said removed parts of said channel base to secure suchparts pivotally to said sash hinge balance channel and to permit suchparts to be moved to lie in the plane of said base, and

means securing one lateral margin of said window sash to said removedparts for pivotal attachment to said sash hinge balance channel, saidpart of said one lateral margin abutted against said base of saidchannel.

4. In a slidable and pivotal window sash assembly,

the combination of,

a window sash,

means engaging one lateral margin of said sash for pivotal and slidingmovement thereof,

a lock bar slidably carried by said sash at the other lateral marginthereof for limited vertical and lateral movement with relation to saidsash to extend laterally therefrom and to be retracted to a position atleast substantially within said sash,

a plastic vertically extending jamb liner of substantially U-shape insection for engaging said other lateral margin of said sash and forreceiving said lock bar when extended to form a substantially sealedconnection therewith,

a sash balance operatively positioned in said jamb liner,

a balance end member slidably positioned in said jamb liner and engagingan end of said sash balance,

means carried by said balance end member to engage the lower edge ofsaid sash to support it on said sash balance, and

a slide catch pivotally carried by said balance end member andresiliently urged laterally outwardly thereof.

5. In a slidable and pivotal window sash assembly,

the combination of,

a window sash,

means engaging one lateral margin of said sash for pivotal and slidingmovement thereof,

a lock bar slidably carried by said sash at the other lateral marginthereof for limited lateral movement with relation to said sash toextend laterally therefrom and to be retracted to a position at leastsubstantially within said sash,

a vertically extending j amb liner for engaging said other lateralmargin of said sash and for receiving said lock bar when extended toform a sliding connection therewith,

a sash balance operatively associated with said jamb liner,

a balance end member slidably positioned in said jamb liner and engagingan end of said sash balance,

means carried by said balance end member to engage said-sash to supportit on said sash balance, and

a slide catch pivotally carried by said balance end member andresiliently urged laterally outwardly thereof.

6. In a slidable and pivotal window sash assembly,

-the combination of,

a window sash,

a vertically positioned metal jamb liner,

a sash hinge balance channel slidably received in said jamb liner, whichchannel is of generally U-shape in horizontal section and has an offsetarcuate hinge section formed thereon at its base, said channel having apair of vertically spaced portions of its base and of the associateparts of said hinge section movable therefrom,

pintle means engaging said hinge section of said sash hinge balancechannel and of said movable parts of said channel base to secure suchparts pivotally to said sash hinge balance channel,

means securing one lateral margin of said window sash to said movableparts for pivotal attachment to said sash hinge balance channel,

a lock bar slidably carried by said sash at the other lateral marginthereof for limited vertical and lateral movement with relation to saidsash to extend laterally therefrom and to be retracted to a position atleast substantially within said sash,

a plastic vertically extending jamb liner of substantially U-shape insection for engaging said other lateral margin of said sash and forreceiving said lock bar when extended to form a substantially sealedconnection therewith,

a sash balance operatively positioned in said plastic jamb liner,

a balance end member slidably positioned in said jamb liner and engagingan end of said sash balance,

means carried by said balance end member to engage the lower edge ofsaid sash to support it on said sash balance,

a slide catch pivotally carried by said balance end member andresiliently urged laterally outwardly thereof,

said lock bar when extended engaging said slide catch to retain it ininoperative position, and

said plastic jamb liner having a plurality of vertically spaced slotstherein for receiving said slide catch to retain said balance end memberin or about at a given vertical position when said slide catch isreleased by retraction of said lock bar.

7. In a slidable and pivotal window sash assembly, the

combination of,

a window sash,

a vertically positioned jamb liner,

a sash hinge channel slidably received in said jamb liner, which channelis of generally U-shape in horizontal section and has an offset arcuatehinge section formed thereon at its base, said channel having a pair ofvertically spaced portions of its base and of the associate parts ofsaid hinge section movable therefrom,

pintle means engaging said hinge section of said sash hinge channel andof said movable parts of said channel base to secure such partspivotally of said sash hinge channel,

means securing one lateral margin of said window sash to said movableparts for pivotal attachment to said sash hinge channel,

a lock bar slidably carried by said sash at the other lateral marginthereof for limited lateral movement with relation to said sash toextend laterally therefrom and to be retracted to a position at leastsubstantially within said sash,

a plastic vertically extending jamb liner of substantially U-shape insection for engaging said other lateral margin of said sash and forreceiving said lock bar when extended to form a substantially sealedconnection therewith,

a sash balance operatively associated with said plastic jamb liner,

a balance end member, engaging an end of said sas h balance, slidablypositioned in said jamb liner and being engageable with said sash tosupport it on said sash balance,

a slide catch pivotally carried by said balance end member and beingurged laterally outwardly thereof, said slide catch having aninoperative position, and

said plastic jamb liner having a plurality of vertically spacedapertures therein for receiving said slide catch to retain said balanceend member at a given vertical position.

8. In a slidable and pivotal window sash assembly, the

combination of,

a window sash,

means engaging one lateral margin of said sash for pivotal and slidingmovement thereof,

a lock bar slidably carried by said sash at the other lateral marginthereof for limited movement with relation to said sash to extendlaterally therefrom and 9 to be retracted to a position at leastsubstantially within said sash,

a plastic vertically extending jamb liner of substantially U-shape insection for engaging said other lateral margin of said sash and forreceiving said lock bar when extended to form a substantially sealedconnection therewith,

a sash balance operatively associated with said jamb liner,

a balance end member slidably carried by said jamb liner and engaging anend of said sash balance,

means carried by said balance end member to engage said sash to supportit on said sash balance,

a slide catch pivotally carried by said balance end member and urgedlaterally outwardly thereof, said slide catch having an inoperativeposition, and

said jamb liner having a plurality of vertically spaced means forengaging said slide catch to retain said balance end member at a givenvertical position.

9. In a slidable and pivotal window sash assembly, the

combination of,

a window sash,

a vertically positioned metal jamb liner,

a sash hinge balance channel slidably received in said jamb liner, whichchannel is of generally U-shape in horizontal section and has an offsetarcuate hinge section formed thereon at its base, said channel having apair of vertically spaced portions of its base and of the associatedparts of said hinge section removed therefrom,

pintle means engaging said hinge section of said sash hinge balancechannel and of said removed parts of said channel base to secure suchparts pivotally to said sash hinge balance channel,

means securing one lateral margin of said window sash to said removedparts for pivotal attachment to said sash hinge balance channel,

a lock bar slidably carried by said sash at the other lateral marginthereof for limited vertical and lateral movement with relation to saidsash to extend laterally therefrom and to be retracted to a position atleast substantially within said sash,

a plastic vertically extending jamb liner of substantially U-shape insection for engaging said other lateral margin of said sash and forreceiving said lock bar when extended to form a substantially sealedconnection therewith,

a sash balance operatively positioned in said plastic jamb liner,

a balance end member slidably positioned in said jamb liner and engagingan end of said sashbalance,

means carried by said balance end member to engage the lower edge ofsaid sash to support it on said sash balance,

a slide catch pivotally carried by said balance end memher andresiliently urged laterally outwardly thereof,

said lock bar when extended engaging said slide catch to retain it ininoperative position, and

said plastic jamb liner having a plurality of vertically spaced slotstherein for receiving said slide catch to retain said balance endmembers in or about at a given vertical position when said slide catchis released by retraction of said lock bar.

References Cited by the Examiner UNITED STATES PATENTS 2/1911 Gelbke2050 2/1952 Etling 2050

3. IN A SLIDABLE AND PIVOTAL WINDOW SASH ASSEMBLY, THE COMBINATION OF, AWINDOW SASH, A VERTICALLY POSITIONED JAMB LINER, A SASH HINGE BALANCECHANNEL SLIDABLY POSITIONED IN SAID JAMB LINER, WHICH CHANNEL HAS A FLATBASE AND IS OF GENERALLY U-SHAPE IN HORIZONTAL SECTION AND HAS AN OFFSETARCUATE HINGE SECTION FORMED THEREON AT ITS BASE, SAID CHANNEL HAVING APAIR OF VERTICALLY SPACED PORTIONS OF ITS BASE AND OF THE ASSOCIATEPARTS OF SAID HINGE SECTION REMOVED THEREFROM, PINTLE MEANS ENGAGINGSAID HINGE SECTION OF SAID SASH HINGE BALANCE CHANNEL AND OF SAIDREMOVED PARTS OF SAID CHANNEL BASE TO SECURE SUCH PARTS PIVOTALLY TOSAID SASH HINGE BALANCE CHANNEL AND TO PERMIT SUCH PARTS TO BE MOVED TOLIE IN THE PLANE OF SAID BASE, AND MEANS SECURING ONE LATERAL MARGIN OFSAID WINDOW SASH TO SAID REMOVED PARTS FOR PIVOTAL ATTACHMENT TO SAIDSASH HINGE BALANCE CHANNEL, SAID PART OF SAID ONE LATERAL MARGIN ABUTTEDAGAINST SAID BASE OF SAID CHANNEL.